1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bad White [126]
3 years ago
9

Need help with this math problem

Mathematics
1 answer:
Jet001 [13]3 years ago
6 0
I had to do several calculations to get the answer.

First I calculated how many points each incorrect answer decreased:

6 questions * x = 30 points => x = 30 points / 6 questions = 5 points / question.

Then I converted it in an equation of the kind:

( ) ( ) = 5

And concluded it was 1/6 * 30 = 5

So, the numbers must be placed on either of these two forms:

( 1/6 ) ( 30) = 5, or

( 30 ) ( 1/ 6) = 5.

Of course, both of them are correct answers.
You might be interested in
I really need help with this geometry on number 7 like help please!!
vredina [299]

Solution: 137 / 2 = 68.5

LMP is 11 degress more so 68.5 + 11 = 79.5

NMP is 11 degrees less so 68.5 - 11 = 57.5


3 0
3 years ago
Heather has divided ​$5400 between two​ investments, one paying 8​%, the other paying 5​%. if the return on her investment is ​$
Phantasy [73]

Answer:

$2500 at 8%.

$2900 st 5%.

Step-by-step explanation:

Let x be the amount invested at rate of 8% and y be the amount invested at the rate of 5%.

We have been given that Heather has divided ​$5400 between two​ investments. We can represent this information as:

x+y=5400...(1)

The return on her investment is ​$345.  

Earnings from the investment at 8% will be 8% of x.

Earnings from the investment at 5% will be 5% of y.

(\frac{8}{100})x+(\frac{5}{100})y=345...(2)

0.08x+0.05y=345...(2)

We will use substitution method to solve our system of equations. From equation (1) we will get,

x=5400-y

Substituting this value in equation (2) we will get,

0.08(5400-y)+0.05y=345

432-0.08y+0.05y=345

-0.08y+0.05y=345-432

-0.03y=-87

\frac{-0.03y}{-0.03}=\frac{-87}{-0.03}

y=2900  

Therefore, Heather has invested an amount of $2900 at 5%.

Let us substitute y=2900 in equation (1) to solve for x.

x+2900=5400

x+2900-2900=5400-2900

x=2500

Therefore, Heather has invested an amount of $2500 at 8%.

6 0
3 years ago
Use the following data set (6, 4, 4, 5, 1, 8, 10, 7, 8, 6, 6, 7, 5, 4, 6) What kind of data point is the value 1?
Anarel [89]
Im thinking outliner
5 0
3 years ago
I need mega help quick plz
Blizzard [7]

Answer:

<h3> option A</h3>

Angle B is the answer

5 0
3 years ago
I need help on math please
katen-ka-za [31]

Answer:

if i correct pls comment I think it is 33

7 0
2 years ago
Other questions:
  • Owen has 12 pieces of rope that are 4 yards each. Owen uses 6 pieces of rope that are each 6 feet long.
    14·1 answer
  • An equation is given below.
    13·1 answer
  • What is the simplified expression for 2^2 times 2^3 over 2^4<br><br> 20<br> 21<br> 22<br> 23
    11·2 answers
  • Chaney is spending the day by selling candy bars for $5 a piece . He spent $13 on supplies. He ended the day with $32, how many
    7·2 answers
  • ONE EASY FRESHMEN MATH QUESTION!!
    7·1 answer
  • What is the sum of -1/2+3/4?
    9·1 answer
  • I need help on this if anyone can help
    11·1 answer
  • The volume of a pyramid is 50 3 . What is the volume of a prism that has a congruent base and is the same height as the pyramid?
    7·2 answers
  • Which one is false ????
    7·1 answer
  • Last week a baseball bat was on sale at Academy Sports for $125.90. It is now on sale for $88.13. Also last week there was a bas
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!